Effect of diffusion weighting due to spoiler gradients in MR Fingerprinting

Yasuhiko Terada1 and Yuta Kobayashi1

1University of Tsukuba, Tsukuba, Japan

MR
fingerprinting based on a fast imaging with steady-state precession (MRF-FISP) is
immune to banding artifacts due to the inhomogeneous field, and thus has been
widely used for rapid quantification of tissue parameters. However, the
MRF-FISP could still be affected by banding artifacts for high-field-strengths,
insufficient shimming, and wide field-of-view scanners. In such cases, use of much
stronger spoiler gradients could alleviate the banding artifacts, but it would increase
the diffusion weighting of the spoiler gradients and lead to the
underestimation of T2 values. In this study, we examined the effect of the diffusion
weighting and showed the correction methods.

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